Type-writing machine.



WITNESSES:

L. R. ROBERTS. [TYPE wRlTlNG' MACHINE.l APPLICAT'IQN mso :MAY 14, 19113. ,?7;,l Patented'ManQS, 19%.

2 SHEETS-SHEET 1.'

M424 @wie www substantially Senn-cylindrical. understood that the ,platen surface may exse'ction of a cylinder, and as herein shown is It will be tend through a greater or less arc, and in Ysome instances may form a complete cylinplace thereon. The radius of curvature is also preferably large, so that 'it is not necessary to bend or curve the work-sheet suf- 4 iciently to prevent it from readily conforming to thev platen surface, and to facilitate the positioning and clamping of the worksheet. The machine is particularly adapted for keeping accounts Where several sheets of different characters are grouped together, and the same record made on all the sheets by a single printing operation; For example, a ledger sheet 22 is placed in position on the' platen, and over this may be placed a statement sheet 23, and a proof sheet 24, manifolding sheets or carbons 25 being interposed 'between the work-sheets.

The means for holding the work-sheets in position comprises clamps 26 extending through the platen and having offset ends 27 which overhang the work-sheets and clamp them against the surface of the platen. The clamps are held in clamping position by springs 28. Each set of clamps is arranged in an arc of, a circle, there being one set of clamps adjacent each end of the platen. Each set of clamps is released by meansof an arc-shaped bar 29 having cam surfaces 30 to engage the clamps and lift them to releasing position.

The cam bar 29 is mounted on the under side of the platen by means of brackets 3l secured to or formed integral with the bar and slidably held against the inner face of the platen by shouldered screws 33`extending through slots 34 in the brackets and threaded into the platen. An arm 35 on the cam bar projects through a slot 36 in the platen. and'has a knob or handle 37 for operi ating the bar. When the handle 37 is moved `forward into the position shown in Fig. 2, the cams 30 lift the clamps 2G, as sho-wn in Fig. 2 and the right-hand end of Fig. 4. When the clamps are thus lifted, a work.-

sheet may be placed on the platen and moved laterally, as indicated by the arrow '(Fig.

' 4) into position, the clamps entering notches 38 in the edge of the work-sheet. The handle 37 may now be moved backward to .release the cams from the clamps and allow the springs 28 to pull the clamps inward, so that their overhanging ends 27 grip the Work-sheet, as indicated at the left-hand end of Fig. 4. The notches 38 are-preferably equally spaced and at equal intervals with the rulings on the work-sheet. The distance between thesenotches is also pref, erably the sameas the distance between adjacent teeth of the rack 18.- It will be seen that by this arrangement the adjustment of any work-sheet either up or down on the platen is always through a distance equal to one or more line-spaces, and the ruled lines on each superposed sheet will bedirectly over the lines lon the sheet or sheets beneath it. y

The printing of the work-sheets is effected by types 39 and type bars 40 pivoted on a curved fulcrum rod 41 and actuated by finger-keys 42 on key levers 43 connected 4through'bell crank levers 44 to their type bars. The levers 43 are iveted at 45, so that when a finger-key is epressed the corresponding bell crank 44 operates to throw its connected vtype bar up to printing position in front of the platen. The type bars may be arranged in a well known manner in an arc-shaped or quadrant frame 40a.

The letter-feed movement of the carriage is controlled by an escapement mechanism comprising an escapement wheel 46 driven by a pinion 47 in mesh with a rack 48 on the carriage. Escapement dogs 49 and 50, which rock on a fulcrum 5l, are connected through a link 52 to an arm 53 on a rock shaft 54 to which are also secured rock arms 55 carry ing a universal bar 56, actuated -by shoulders 57 on the type bars.

TheL rack 48 is carried on arms 58 pivoted at 59 to the platen frame. An arm 60 connected to an arm 58 (Fig. l) is connected through a link 61 to a lever 62 having a inger-piece G3 which, when depressed, operates to lift the rack 48 free of the pinion 47, permitting the carriage to be moved freely in either direction. A pointer 64 working over a scale 65 may be provided, if desired. Spring-pressed arms or .wings 66 may be placed, if desired, on opposite sides of the printing point to guide and hold the work-sheet against the platen at the printing point. A

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others. Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a'rotary platen and types to strike thereagainst, of a series of papergaging clamps arranged in the arc of a circle adjacent one end of the platen and forming'a means to square work-sheets to the printing line and gage them with respect to their positions circumferentially of the platen, and ay manually-operable clamp-l operating device located within the platen and c^ntrclling the clamps for clamping or releasing the work-sheets while the platen is at rest.

2. In `a Ltypewriting machine, the combi nation of a rotary platen and tvpes to print thereon, a clamp for a. 4 Work-sheet, said 'of Work-sheet holding' clamps projecting through openings inthe platen, springs to clamp extending through the platen in p0- sition to grip the Work-sheet, and a clampactuating device slidably mounted on the inner surface of the platen and manually `operable While the platen is at rest to ace -tuate the clamp. l

3. In a typewriting machine, the combi nation with a rotary platen and types arranged to print thereon, of a Work-sheet holding` clamp projecting through thel platen, a spring to move the clamp to sheetholding position, and a clamppperating device slidably mounted on the inner surface of the platen and formed with. a cam operable while the platen is at rest to move the clampto sheet-releasing position.

4, ln a typevvriting machine, the combination of a rotary platen arranged for types to strike thereagainst, a clamp projecting above the surface of the platen and adapted to grip a york-sheetand hold it in position on the platen for the types to print thereon, a springa to hold the clamp in gripping,` position, a cam beneath the platen surface, and a clamp-operating device slidably mounted on the inner surface oit' the platen and manally operable While'the platen is at rest for moving the cam into position to release the clamp.

5. ln a typewriting' machine, the combination or a platen having a curved surface, a row of Work-holding devices arranged in an arc on said surface, and a cam device mounted on the inner surface of the platen and movable in an are to actuate said holding devices.

6. In a typewriting machine, the combination of a platen having a curved surface, clamping; devices thereon arranged in the arc of a circle, and an arc-shaped clampactuatinga device mounted on the inner surface of the'platen and slidable thereon to actuate the clamping devices.

7. ln a typewriting,- machine, the combi nation of a rotary platen, a series of clamps, and a bar slidablv connected to the inner surface of the platen and provided With means to actuatethe clamps.-

8.' l'n a typewriting machine, the combination of a rotary platen, a series of clamps, and a bar slidably connected to the inner surface of the platen and providedl With cams to project the clamps for releasing the Worksheets.

9. ln a tvpewriting machine, the combination Vwith a rotary platen, of a series move said clamps inward to clamping position, an arc-shaped cam barr slidably mounted on the inner surface of the platen and formed with cams to project the clamps, A

and a handle connected to the cam bar and projecting" bevond the platen. i l0. ln a ty pevritng machine, the combination of a! rotary platen, line-space mechamsm for rotatmgthe platen through predetermined angles, and a series of vverlrmr the inner side of the platen for individually' holding the clamps in clamping position, and a clamp-.releasing device Within the platen operable to move the clamps to po- Sition to release a Work-sheet.

.12. ln a typeivriting machitne, the combination ot' a rotary platen having a printiing` surface for the types to strilreagainst, a series of clamps arranged in an arc alontg` the end of the platen to clamp the lateral edge of a work-sheet and hold it on the printing` surface ot the platen, each of said clamps movable in a direction perpendicular to the face of the platen intojand out of clamping position, springs to individually move the clamps to clamping position, and a releasinp,A device located Within the platen andv operable manually to aetuate the series of clamps collectivelyto \vork-sheet-releasing position.

13. In a typewriting machine, the combination of a rotary platen havim?,1 a printing surface arranged for types to strike against, independently operableivorlesheet holding clamps carried by the platen and arranged in rows adjacent opposite ends thereof to clamp the lateral edges ot Work-sheets and hold said sheets on the printing surface, and

clamp-releasing devices slidalfly mounted on the inner surface of the platenand manually operable while the platen is at rest. to move the clamps into position to release 'the Work-sheets.

14. In a typeiviiitinp' machine, the co1nbination with a rotarv platen and types arranged to strike thereagainst, of' Work-- sheet-holding devices formed to engage cooperating' holding surfaces on work-sheets to hold a plurality of the work-sheets on the printing surface of the platen. and permitting relative adjustn'ientof the worksheets throug'h distances determined by the spacing' of the worksheet-heiding devices and of said holding' surfaces, thereby permittine the work-sheets to be arranged said distances one in advance of another on the platen.

15. In a typewritinp; machine, the combi nation with a rotary platen, of a series of Work-sheet holding clamps, and line-space mechanism comprising a line-space raclt soA having .teeth arranged around the platen axle; the angular distances between adjacent clamps each being a -whole number of times the angular distance between adjacent teeth of the rack.

16. In a typewriting machine, the combination of a .rotary platen arranged for the types to strike against and having a printing surfacev with a long radius of curvature to form a collating board on which worksheets may be arranged, 'clamping means along the lateral edge of the platen surface to engage the lateral edges of work-sheets and hold them in position on the platen to be written upon, said clamping means extending within the platen, and a manually operable operating device mounted on the inner surface of the platen for operating said clamping means' while the platen is at rest.

17. In a typewriting machine, the combination with a rotary platen having a curved surface forming any incomplete cylinder of large diameter to form'a collating board or table on which Work-sheets may be arranged, a series of clamps arranged 1n a row along the curved edge of the platen to entable on which Work-sheets may be ar-4 ranged, a series of clamps arranged in a row along the curved edge of the platen to engage the edge of' a work-sheet placed on the platen, said clamps extending through the platen surface, springs to individually move the clamps to Work-sheet holding p0- sition, and a manual releasing device slidably mounted on the inner surface of the platen and operable while the platen 1s at rest, said releasing device comprising cams to engage the-clamps and move them to Work-sheet releasing position when the releasing device is operated.

19.1!1 a typewriting machine, the combination with a rotary platen having acurved surface of large diameter to form a collating table on which Work-sheets may be arranged While the platenis stationary, sheet-gaging clipscarried by the platen and arranged to engage the Work-sheets at different points along a side .edge thereof, square the sheets to the printing line, gage them both circumferentially and lengthwise of theplaten, and clamp them in position on the platen, a carria ge on which the platen is mounted, letterfeed mechanism controlling the travel of the carriage, and line-spacing mechanism to effect line-space rotation of the platen.

20. ,In a typewriting machine, the combination with a substantially semi-cylindrical rotary platen of large diameter forming a work-sheet holding surface of suliicient extent to receive a full-size work-sheet thereon and permit the entire printing area to be 'brought Within the printing zone during an lstem .extending through the platen and an overhanging projection to engage and clamp a work-sheet to the platen, springs within the platen to individually move the clamps to clamping position, and a clamp-releasing device on the inner 'surface of the platen and having a sliding connection with the platen, said device formedwithcams to engage the clamps and project them to releasing position, said releasing device having a handle projecting beyond the platen for operating said device.

22. In a typewritin'g machine, the combination with'a machine frame and a carriage thereon, of a rotary platen mountedon the carriage, the portion of the platen above its aXle being above the machine frame and carriage and presenting an area ,of suliicient extent to form a collating table on which may be arranged a main ledger or analogous sheet and other sheets or forms of smaller size overlying one another in different positions on the table, with the support ing area of the table underlying the entire surface of the sheets, and sheet-gaging clamps arranged to gage the sheets circumferentially of the platen N and operable to clamp the sheets in their gaged position.v

23. In a typewriting machine, the Icombination of a segment of such large curvature and area as to form a sheet-collating table, permitting the assembling thereon While -in one position, of a main ledger or analogous sheet and various sheets or forms of smaller size overlying one another in dif ferent relationships with the table, and means on said table to engage the side edges of the sheets to gage them inthe direction of their length. with the sheets in different positions of advancement with Vrespect to the printing line, and to square the sheets etr to the printing'line and hold vthem in their adjusted positions; said table being mounted upon la pivot to be moved in linespacing direction-relatively to the types, and being curved concentrically with said pivot for said movement, and having a printing i'ield to support the Work-sheets when strilck by the types, whereby the table may serve as a combined collating table and platen.

24. In a typewriting machine, the combi nation of a segment of such large curvature and area as to form a sheet-collatingiboard ortable permitting, while iii one position, the assembling thereon of a main ledger or analogous sheet, and other sheets or foi-ms overlying one another in different positions on the table; means on said table to engage one side edge of one or more of said sheets,

to gage them in the direction of their length,

to square them to the printing line andato holdthem in their adjusted positions; means to engage the opposite side edge of another siieet, to gage it in the direction of its length, to square it to the printing line and to hold it in its adjusted position.; so that each sheet is retained in position on the table by sheeteiigaging means along at least one of its side edges; releasing devices for releasing the eii gaging means along one side independently of those along the other side, and a carriage on which said table is rotatably mounted, the surface of said table being curved concentric to its axis of rotation and having a printing hield to support the 'worksheets when struck` by the types, whereby the table may serve as a combined collatiiigtable and platen.

25. ln a typewritiiig machine, the com nation of a segment of such large curi` and area as to form a sheet-collating table permitting the assembling thereon While in one position, of a main ledger sheet and other sheets or forms overlying one another in di ii'erent positions on the table, a carriage on which the table is rotatably mounted, the surface of the table being curved concentric -to its axis of rotation and having a printing field to support the Work-sheets when struck by the types, the table' thereby serving as a combined collating table and platen, the carriage having a letter-feed movement in a direction parallel With said axis of rotation; and sheet-gustifying clips arranged to engage a side edge ofthe sheets, to gage the sheets With their leading edges at diiferent positions of advancement, to square the sheets to the printing line. and to clamp the sheetsintheir justified positions on the table.

26. In a 'typewriting machine, the combination of a segment of Vsuch large curvature and areaas to form a sheetlcollatiiig table permitting the assembling thereon While in one position of a main ledger sheet and other sheets or forms overlying one another in difa vcavrria on ferent positions on f ta 'ly mounted., the

which the ri movement in. a.

surface of the table being curved concentrically to its axis of rotation and having a printing iield to support the worksheets when struck by the types, the table thereby serviug'as a combined collating table and platen, the cai-iiage having a letter feed movement in a direction parallel with said axis of rotation; a set of sheet-justifying clips arranged to engage a side edge of the sheets, to gage the sheets with their leading edges at different positions of advancement, to square the sheets to the printing line, and to clamp the sheets in their justified positions on the table; an additional set of clips positioned to engage the oppositeside edge of an additional sheet to' square the latter to the platen, and to clamp it in position on the table; and means for releasing either set of clips independently of the other set.

v 27. In a typewriting machine, the combi nation of a segment of such large curvature and varea as to form a sheet-collating` table permitting the assemblingthereon While in one position of a niain ledger sheet and other sheets 'or forms overlying one another in diiferent positions on the table, a carriage on which the table is rotatably mounted, the surface of the table being curved concentrically to its axis of rotation and'having a printing `field to support the Work-sheets when struclr by the types, the table thereby serving as conibined'collating'tabie and platen, the carriage having a letter-feed movement in a direction parallel with said axis of rotation; a series of spaced Waidly therefrom in position to engage correspondinglyspaced gaging surfaces along the side edge of a sheet or sheets, to square said sheets to the printing lineand to gage the sheets with respect to their positions of `advancemeiit relative to the printing line; said gages having sheet clamping extensions, and means to4 actuate the gages and cause said extensions to clamp the sheets to the table Ain their adjusted position after being gaged thereon.

28. in a typewriting machine, the combination of a segment of such large curvature. and area as to form a. sheet-collating table permitting the assembling thereon While one position of a main ledger sheet and other sheets or forms overlying one another in different positions-011 the table, a carriage on which the table is rotatably mounted, they cally to its axis of' rotation and having a printing Held to support the work-sheets 'when struck by the types., the table` thereby serving as a combined collating table and platen, the carriage having a letter-feed direction parallel with 'axis of rotation; a series of sheetgagir clamping devices carried by the tal`| projecting upwardly therefrom in pos sheets have been gaged thereby into clamping position to hold the sheets in their adjusted position on the table, and a clamp-releasing device carried by the table and oper- 10 able to collectively actuate the clamps to sheet-releasing position.

' LYMAN R. ROBERTS. Witnesses:

F. E. ALEXANDER, TITUs H. InoNs. 

